protected override void OnUpdate(CacheChange change, string userKey, ICoreItem oldValue, ICoreItem newValue, CoreItemCacheParams userParam)
{
switch (change)
{
case CacheChange.CacheCleared:
if (oldValue != null)
{
throw new ArgumentException("oldValue");
}
if (newValue != null)
{
throw new ArgumentException("newValue");
}
_updates.Add(new CacheChangeData(_cacheId, change, null, null));
break;
case CacheChange.ItemCreated:
if (oldValue != null)
{
throw new ArgumentException("oldValue");
}
if (newValue == null)
{
throw new ArgumentException("newValue");
}
_updates.Add(new CacheChangeData(_cacheId, change, null, newValue));
Interlocked.Increment(ref _itemsCreated);
break;
case CacheChange.ItemExpired:
case CacheChange.ItemRemoved:
if (oldValue == null)
{
throw new ArgumentException("oldValue");
}
if (newValue != null)
{
throw new ArgumentException("newValue");
}
_updates.Add(new CacheChangeData(_cacheId, change, oldValue, null));
Interlocked.Increment(ref _itemsDeleted);
break;
case CacheChange.ItemUpdated:
if (oldValue == null)
{
throw new ArgumentException("oldValue");
}
if (newValue == null)
{
throw new ArgumentException("newValue");
}
if (newValue.Id != oldValue.Id)
{
_updates.Add(new CacheChangeData(_cacheId, change, oldValue, newValue));
Interlocked.Increment(ref _itemsUpdated);
}
break;
}
}
